Patch CUDA training logic to enable wasmedge-llmc gpu backend #27

Job	Run time
build-cuda-fp16	1m 14s
build-cuda-fp32	1m 26s
build-and-test-cpu (ubuntu-latest)	4m 38s
build-cuda-bf16	1m 15s
build-and-test-cpu (macos-latest)	3m 9s
build-cuda-kernels	1m 35s
build-cuda-windows	1m 28s
build-and-test-cpu (windows-latest)	7m 55s
build-ubuntu20-04	2m 42s
	25m 22s

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